Operating device for sliding doors.



W. J. STILLING.

OPERATING DEVICE FOR SLIDING DOORS.

' APPLICATION FILED DEC. 2. 1915.

l 171 ,004. Patnted Feb. 8, I916.

' III/VENTOR WiZZz'amJJfi ZZiYg A TTOR/VEYS p p'NirEn srn rns mmmomo WILLIAM J. STIELING, or ELMHURST, NEW YORK, ASSIGNOR To Know; IRON WORKs,

OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

OPERATING DEVICE FOR SLIDING DOORS.

Specification of Letters Patent.

, Patented rea s, 191s.

Application filed December 2, 1915. Serial N 0. 64,645.

To all whom it may concern:

Be it known that I, l/VILLIAM J. STILLING, a citizen of the United States, and a resident of Elmhurst, in the county of Queens and State of New York, have invented certain new and useful Improvements in Operating Devices for Sliding Doors, of which the following is a specification.

My invention relates to improvements in devices for operating double sliding doors and is particularly adapted for useon elevator doors.

The main Object of my inventlon is the construction of anovel device of the above nature which shall be simple in construction, of ease and of low cost to manufacture and by means of which a movement of. one of the doors in one direction shall simultaneously produce a'movementof, the other door in the opposite direction. I

Another object of the inventlon 1s the production "of a device of the character above described which shall also beprovided with means for automatically locking the doors when they slideinto meeting or.

ing forming a part of this specification, in

which similar characters of reference indicate corresponding parts in both the views.

' ures of the drawing: 1, 2 represent sliding In the drawing: Figure l is a front ele-' vation of my improved device as applied to Fig.2 is an en doors hung on suitable. door hangers 3,

adapted to travel on the track hand 5 indicates a guide or groove within which the doors slide. A. link 6 is'pivotally connected at one end, as at 7 to the door 1 and preferably to one of the hangers from which the door-is suspended. The other end of the link 61s pivotally connected, as illustrated, to a lever .8 which is fulcrumed at, 9 to a fixed support 10. The opposite end of the lever 8 is pivotally connected to a sliding block '11 adapted to slideon a rod 12 held by brackets v13 secured to the door 2 by suitable bolts or rivets as shown. A spring 14,-

encircling the rod 12, is compressed between the lower bracket 13 and the "sliding block 11 and exerts an upward pressure on thesliding block.

15 indicates a vertical latch-bolt slidable in and held by brackets 16 and .17 mounted on the door 2. Ator near the lower end a spring 18 encircles the latch-bolt 15 and is compressed between the bracket 17 and a 1 collar 19 fixed on the bolt 15. The action of.

the spring 18 against thefixed collar 19 normally forces the latch-bolt upwardly and the upward movement of the latch-bolt is limited by the engagement of'the fixed collar 20 with the bracket 16.

21 indicates a suitable casing (shown in section) .which isvpreferably attached or secured to the bracket 17 and which serves as a protection for, and-to hide fromv view,

the spring 18 and fixed collar 19. 22 and 23 iindicate fixed collars carried by the latchbolt 15 by means ofwhich the latch-bolt can be more firmly grasped in order to oper ate the same when it is desired to unlock or operate the doors. W'hen the latch-bolt is I pulled down manually, its movement is.

limited by a stop or fixed collar 24 whichis adapted to engage 0r abut against the end of the casing- 21.

' A latch25 is pivoted at 26 to the link 6 and is provided with a slot 27 which receives a pin 28 suitably fastened to or integrally united with the link 6 and which supports the latch when the latch is in normal posi- I tion and limits the movement of the latch on its pivot. The end of the pin 28 is provided with a flange or retaining member 29 for preventing any movement of the latch except an angular movement on pivot 26.

The doors are operated in the following manner: The latcl1bolt is pulled down against the action of the spring 18 until the latch-bolt is released from its engagement with the end of the latch 25, thereby unlocking the doors. The door 2, preferably by means of the latch-bolt 15, is then thrust or pulled to the right against the action of the spring 1 f and the movement of the door 2 to the right produces a movement of the door 1 to the left. As is obvious, a movement of one door in one direction simultaneously produces a movement of the other door in the opposite direction. After the doors, in either an opening or closing movement, reach a position at which the link 8 assumes a perfectly vertical position, the spring 1 1, due to its upward pressure on the sliding block 11, assists the movement of the doors in their travel. Upon a closing movement of the doors, and just before they slide into meeting or closedposition, the latch-bolt 15 engages the under side of the latch forcing the latch upward on its pivot due to the action of the spring 18. VJhen the doors meet,the latch falls and rests on pin 28 and the latch-bolt engages the end of the latch thereby automatically locking the doors.

The position of door 2 and lever 8 are shown in dotted lines when the doors are wide open and the paths of travel of the ends of the lever 8 when the doors are operated are likewise shown in dotted lines.

I do not desire to limit myself to the precise details of construction and arrangement herein set forth as it is manifest that various modifications may be made therein Without departing from the essential features of my invention as defined in the appended claims.

What I claim as my invention is:

1. In a device for operating a pair of sliding doors in opposite directions, the combination of a link pivoted at one end to one of the doors and having its other end pivotally connected to the other door, a latch on said link and a bolt movable vertically and adapted to engage said latch to lock the doors together.

2. In a device for simultaneously operat ing double parting sliding doors, the combination of a link secured to one of the doors, a lever connected to said link and the other of said doors and means engaging said lever for assisting in both the opening and closing movement of the doors.

3. In a device for simultaneously operating a pair of sliding doors, the combination of a link pivoted to one of the doors, a lever connected to said link and to the other door and a spring carried by one of the doors and exerting an upward vertical pressure against said lever for assisting in both the opening and closing movement of the doors after they have reached a predetermined position in their travel.

4. In a device for simultaneously operating double parting sliding doors, the combination of a link pivotally connected to one of the doors, a lever -fulcrumed to a suitable support and pivotally connected at one end to said link and at the other end to the other of said doors, means engaging said link when the doors are in closed position in order to lock the same and means for assisting in both the opening and closing movement of the doors.

5. In a device for simultaneously operating a pair of sliding doors, the combination of a link pivotally connected to one of the doors, a lever fulcrumed to a suitable support and pivotally connected to said link and the other of said doors, a vertical latch-bolt adapted to engage the link to automatically lock the doors when they slide into closed position and meansfor assisting in both the opening and closing movement of the doors after they. have reached a predetermined position in their travel.

6. In a device for simultaneously operat ing a pair of sliding doors, the combination of a link pivotally connected to one of the doors, a latch pivotally connected to said link, a lever connected to said link and the other of said doors, a latch-bolt adapted to engage said latch to automatically lock the doors when they slide into closed position and means for assisting the opening and closing movement of the doors.

7. In a device for simultaneously operating a pair of sliding doors, the combination of a link pivotally connected to one of the doors, a latch pivotally connected to said link, a lever fulcrumed to a suitable support and pivotally connected to said link and the other of said doors and a spring-actuated latch-bolt adapted to engage the latch to automatically lock the doors when they slide into closed position.

8. In a device for simultaneously operating a pair of sliding doors, the combination of a link pivotally connected to one of the doors, a lever fu'lcrumed to a suitable support and pivotally connected to said link and the other of said doors, a latch-bolt adapted to engage the link to automatically lock the doors when they slide into closed position and means for retaining said latch-bolt in locked position.

9. In a device for simultaneously operating a pair of sliding doors, the combination of a link pivotally connected to one of the doors, a latch pivotally connected to said link, a slidable block carried by a rod fas- 10 and closing movement of the doors after they have reached a predetermined position in their travel.

Signed at New York, in the county of New York and State of New York this 29th day of-Noven ber, A. D. 1915. v

WILLIAM J. STILL ING.

Witnesses: p

' LILLIE VREELA D,

F. B. TOWNSEND.

Copies of this patent may be obtained for five cents each, by addressing the Goinmission er of Patents,

Washington, D. 0. 1 

